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113 lines
2.9 KiB
C
113 lines
2.9 KiB
C
/* Test if a syscall is correctly restarted.
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Copyright (C) 2024-2025 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <support/xsignal.h>
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#include <support/check.h>
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#include <support/process_state.h>
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#include <support/xunistd.h>
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#include <support/xthread.h>
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#include <sys/wait.h>
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static int
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check_pid (pid_t pid)
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{
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/* Wait until the child has called pause and it blocking on kernel. */
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support_process_state_wait (pid, support_process_state_sleeping);
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TEST_COMPARE (kill (pid, SIGSTOP), 0);
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/* Adding process_state_tracing_stop ('t') allows the test to work under
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trace programs such as ptrace. */
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support_process_state_wait (pid, support_process_state_stopped
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| support_process_state_tracing_stop);
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TEST_COMPARE (kill (pid, SIGCONT), 0);
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enum support_process_state state
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= support_process_state_wait (pid, support_process_state_sleeping
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| support_process_state_zombie);
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TEST_COMPARE (state, support_process_state_sleeping);
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TEST_COMPARE (kill (pid, SIGTERM), 0);
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siginfo_t info;
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TEST_COMPARE (waitid (P_PID, pid, &info, WEXITED), 0);
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TEST_COMPARE (info.si_signo, SIGCHLD);
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TEST_COMPARE (info.si_code, CLD_KILLED);
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TEST_COMPARE (info.si_status, SIGTERM);
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TEST_COMPARE (info.si_pid, pid);
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return 0;
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}
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static void *
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tf (void *closure)
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{
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pause ();
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return NULL;
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}
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static void
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child_mt (void)
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{
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/* Let only the created thread to handle signals. */
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sigset_t set;
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sigfillset (&set);
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xpthread_sigmask (SIG_BLOCK, &set, NULL);
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sigdelset (&set, SIGSTOP);
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sigdelset (&set, SIGCONT);
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sigdelset (&set, SIGTERM);
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pthread_attr_t attr;
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xpthread_attr_init (&attr);
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TEST_COMPARE (pthread_attr_setsigmask_np (&attr, &set), 0);
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xpthread_join (xpthread_create (&attr, tf, NULL));
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}
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static void
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do_test_syscall (bool multithread)
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{
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pid_t pid = xfork ();
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if (pid == 0)
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{
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if (multithread)
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child_mt ();
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else
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pause ();
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_exit (127);
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}
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check_pid (pid);
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}
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static int
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do_test (void)
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{
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/* Check for both single and multi thread, since they use different syscall
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mechanisms. */
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do_test_syscall (false);
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do_test_syscall (true);
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return 0;
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}
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#include <support/test-driver.c>
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